64 University of Michigan 



Trichomorpha eutyla, sp. now 



PI. J4, Figs. 167-170; PL 25, Fig. i;i 



Dorsum black, with the keels ferruginous yellow to yellow. 

 Antennae dark brown. Legs paler, yellownsh brown. 



Dorsum but weakly arched and the keels at a high level. 

 Posterior angles of all keels from the second caudad acutely 

 and strongly produced. Lateral margins of keels w-holly 

 smooth, excepting the usual tooth or serration toward the 

 anterior corner, this small, the second, third and fourth keels 

 also with two w-eak indentations of serrations caudad of this. 

 Caudal margin of all keels caudad of the fifth with a single 

 distinct tooth as shown in PI. 24, Figs. 167 and 168. Processes 

 of keels all straight, none at all distally curved. 



Dorsal surface of metazonites smooth, no tubercles at all 

 developed ; typically a distinct transverse furrow, from which 

 a number of straight, parallel sulci extend caudad, partly 

 dividing the caudal region into separate areas. Dorsal sur- 

 face of keels moderately elevated and wholly smooth. 



In the legs of the male the pads beneath tarsi are large 

 and are strongly and equally developed to the twenty-fourth 

 legs, caudad of which they abruptly cease or show as but a 

 slight angle over the twenty-fifth legs. (PI. 25, Fig. i/i.) 

 Anterior legs and sterna without special lobes or processes. 



Gonopods of male as shown in PI. 24, Figs. 169, 170. 



Length of male, 20 mm. ; width, 2 mm. 



Width of female, to 2.6 mm. 



Colombia : San Lorenzo. Seven males and females takeii 

 under logs and stones at the edge of a clearing at 4.500 feet ; 

 July 9, 1913 ; \l. A. Carriker. 



Cincinnati Coffee Plantation, in rotten log; July 2. 1913; 

 A. S. Pearse. Several broken specimens, male and female. 



Hok.type, M. C. Z.. 5.158. 



